On Mon, Jul 30, 2018 at 04:51:59PM +0200, Christian König wrote:
> Instead of having extra handling just create an empty bo_list when no
> handle is provided.

Reviewed-by: Huang Rui <[email protected]>

In which case, when the command is being submitted, there is no bo list
handle? All BOs are per-VM, no shared BO?

Thanks,
Ray

> 
> Signed-off-by: Christian König <[email protected]>
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 111 
> ++++++++++++++-------------------
>  1 file changed, 46 insertions(+), 65 deletions(-)
> 
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c 
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
> index 1d7292ab2b62..502b94fb116a 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
> @@ -561,6 +561,7 @@ static int amdgpu_cs_parser_bos(struct amdgpu_cs_parser 
> *p,
>                               union drm_amdgpu_cs *cs)
>  {
>       struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
> +     struct amdgpu_vm *vm = &fpriv->vm;
>       struct amdgpu_bo_list_entry *e;
>       struct list_head duplicates;
>       struct amdgpu_bo *gds;
> @@ -580,13 +581,17 @@ static int amdgpu_cs_parser_bos(struct amdgpu_cs_parser 
> *p,
>                                      &p->bo_list);
>               if (r)
>                       return r;
> +     } else if (!p->bo_list) {
> +             /* Create a empty bo_list when no handle is provided */
> +             r = amdgpu_bo_list_create(p->adev, p->filp, NULL, 0,
> +                                       &p->bo_list);
> +             if (r)
> +                     return r;
>       }
>  
> -     if (p->bo_list) {
> -             amdgpu_bo_list_get_list(p->bo_list, &p->validated);
> -             if (p->bo_list->first_userptr != p->bo_list->num_entries)
> -                     p->mn = amdgpu_mn_get(p->adev, AMDGPU_MN_TYPE_GFX);
> -     }
> +     amdgpu_bo_list_get_list(p->bo_list, &p->validated);
> +     if (p->bo_list->first_userptr != p->bo_list->num_entries)
> +             p->mn = amdgpu_mn_get(p->adev, AMDGPU_MN_TYPE_GFX);
>  
>       INIT_LIST_HEAD(&duplicates);
>       amdgpu_vm_get_pd_bo(&fpriv->vm, &p->validated, &p->vm_pd);
> @@ -605,10 +610,6 @@ static int amdgpu_cs_parser_bos(struct amdgpu_cs_parser 
> *p,
>                       goto error_free_pages;
>               }
>  
> -             /* Without a BO list we don't have userptr BOs */
> -             if (!p->bo_list)
> -                     break;
> -
>               INIT_LIST_HEAD(&need_pages);
>               amdgpu_bo_list_for_each_userptr_entry(e, p->bo_list) {
>                       struct amdgpu_bo *bo = e->robj;
> @@ -703,21 +704,12 @@ static int amdgpu_cs_parser_bos(struct amdgpu_cs_parser 
> *p,
>       amdgpu_cs_report_moved_bytes(p->adev, p->bytes_moved,
>                                    p->bytes_moved_vis);
>  
> -     if (p->bo_list) {
> -             struct amdgpu_vm *vm = &fpriv->vm;
> -             struct amdgpu_bo_list_entry *e;
> +     gds = p->bo_list->gds_obj;
> +     gws = p->bo_list->gws_obj;
> +     oa = p->bo_list->oa_obj;
>  
> -             gds = p->bo_list->gds_obj;
> -             gws = p->bo_list->gws_obj;
> -             oa = p->bo_list->oa_obj;
> -
> -             amdgpu_bo_list_for_each_entry(e, p->bo_list)
> -                     e->bo_va = amdgpu_vm_bo_find(vm, e->robj);
> -     } else {
> -             gds = p->adev->gds.gds_gfx_bo;
> -             gws = p->adev->gds.gws_gfx_bo;
> -             oa = p->adev->gds.oa_gfx_bo;
> -     }
> +     amdgpu_bo_list_for_each_entry(e, p->bo_list)
> +             e->bo_va = amdgpu_vm_bo_find(vm, e->robj);
>  
>       if (gds) {
>               p->job->gds_base = amdgpu_bo_gpu_offset(gds);
> @@ -745,15 +737,13 @@ static int amdgpu_cs_parser_bos(struct amdgpu_cs_parser 
> *p,
>  
>  error_free_pages:
>  
> -     if (p->bo_list) {
> -             amdgpu_bo_list_for_each_userptr_entry(e, p->bo_list) {
> -                     if (!e->user_pages)
> -                             continue;
> +     amdgpu_bo_list_for_each_userptr_entry(e, p->bo_list) {
> +             if (!e->user_pages)
> +                     continue;
>  
> -                     release_pages(e->user_pages,
> -                                   e->robj->tbo.ttm->num_pages);
> -                     kvfree(e->user_pages);
> -             }
> +             release_pages(e->user_pages,
> +                           e->robj->tbo.ttm->num_pages);
> +             kvfree(e->user_pages);
>       }
>  
>       return r;
> @@ -815,9 +805,10 @@ static void amdgpu_cs_parser_fini(struct 
> amdgpu_cs_parser *parser, int error,
>  
>  static int amdgpu_bo_vm_update_pte(struct amdgpu_cs_parser *p)
>  {
> -     struct amdgpu_device *adev = p->adev;
>       struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
> +     struct amdgpu_device *adev = p->adev;
>       struct amdgpu_vm *vm = &fpriv->vm;
> +     struct amdgpu_bo_list_entry *e;
>       struct amdgpu_bo_va *bo_va;
>       struct amdgpu_bo *bo;
>       int r;
> @@ -850,31 +841,26 @@ static int amdgpu_bo_vm_update_pte(struct 
> amdgpu_cs_parser *p)
>                       return r;
>       }
>  
> -     if (p->bo_list) {
> -             struct amdgpu_bo_list_entry *e;
> -
> -             amdgpu_bo_list_for_each_entry(e, p->bo_list) {
> -                     struct dma_fence *f;
> -
> -                     /* ignore duplicates */
> -                     bo = e->robj;
> -                     if (!bo)
> -                             continue;
> +     amdgpu_bo_list_for_each_entry(e, p->bo_list) {
> +             struct dma_fence *f;
>  
> -                     bo_va = e->bo_va;
> -                     if (bo_va == NULL)
> -                             continue;
> +             /* ignore duplicates */
> +             bo = e->robj;
> +             if (!bo)
> +                     continue;
>  
> -                     r = amdgpu_vm_bo_update(adev, bo_va, false);
> -                     if (r)
> -                             return r;
> +             bo_va = e->bo_va;
> +             if (bo_va == NULL)
> +                     continue;
>  
> -                     f = bo_va->last_pt_update;
> -                     r = amdgpu_sync_fence(adev, &p->job->sync, f, false);
> -                     if (r)
> -                             return r;
> -             }
> +             r = amdgpu_vm_bo_update(adev, bo_va, false);
> +             if (r)
> +                     return r;
>  
> +             f = bo_va->last_pt_update;
> +             r = amdgpu_sync_fence(adev, &p->job->sync, f, false);
> +             if (r)
> +                     return r;
>       }
>  
>       r = amdgpu_vm_handle_moved(adev, vm);
> @@ -889,9 +875,7 @@ static int amdgpu_bo_vm_update_pte(struct 
> amdgpu_cs_parser *p)
>       if (r)
>               return r;
>  
> -     if (amdgpu_vm_debug && p->bo_list) {
> -             struct amdgpu_bo_list_entry *e;
> -
> +     if (amdgpu_vm_debug) {
>               /* Invalidate all BOs to test for userspace bugs */
>               amdgpu_bo_list_for_each_entry(e, p->bo_list) {
>                       /* ignore duplicates */
> @@ -1217,22 +1201,19 @@ static int amdgpu_cs_submit(struct amdgpu_cs_parser 
> *p,
>       struct amdgpu_ring *ring = p->ring;
>       struct drm_sched_entity *entity = &p->ctx->rings[ring->idx].entity;
>       enum drm_sched_priority priority;
> +     struct amdgpu_bo_list_entry *e;
>       struct amdgpu_job *job;
>       uint64_t seq;
>  
>       int r;
>  
>       amdgpu_mn_lock(p->mn);
> -     if (p->bo_list) {
> -             struct amdgpu_bo_list_entry *e;
> +     amdgpu_bo_list_for_each_userptr_entry(e, p->bo_list) {
> +             struct amdgpu_bo *bo = e->robj;
>  
> -             amdgpu_bo_list_for_each_userptr_entry(e, p->bo_list) {
> -                     struct amdgpu_bo *bo = e->robj;
> -
> -                     if (amdgpu_ttm_tt_userptr_needs_pages(bo->tbo.ttm)) {
> -                             amdgpu_mn_unlock(p->mn);
> -                             return -ERESTARTSYS;
> -                     }
> +             if (amdgpu_ttm_tt_userptr_needs_pages(bo->tbo.ttm)) {
> +                     amdgpu_mn_unlock(p->mn);
> +                     return -ERESTARTSYS;
>               }
>       }
>  
> -- 
> 2.14.1
> 
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